X CONTENTS. 



PAGE 



Determination of the total acidity of the gastric contents ...... 1 28 



Hydrochloric acid 129 



Origin 129 



Significance 130 



Tests for hydrochloric acid 130 



Estimation 131 



Lactic acid 133 



Tests 133 



Estimation 133 



Acetic acid and butyric acid 134 



Tests 134 



Estimation 134 



The ferments of the gastric juice and their pro-enzymes 135 



Pepsin 137 



Isolation 140 



Estimation 140 



Pepsinogen -. 141 



Tests 141 



Estimation 141 



Chymosin and chymosinogen 141 



Tests . . . ".143 



Isolation 143 



Estimation 143 



Other constituents of the gastric juice 144 



Gases 144 



THE PANCREATIC JUICE 144 



General properties 146 



Amount 146 



Specific gravity 147 



Chemical composition 147 



The ferments and their zymogens 147 



Trypsin 149 



Test 150 



Isolation 150 



The amylolytic ferment 151 



Steapsin 151 



Maltase 152 



Chymosin 152 



THE SECRETION OF THE GLANDS OF BRUNNER 152 



THE ENTERIC JUICE 152 



Enterokinase 154 



Erepsin . . 155 



Secretin and prosecretin 155 



THE BILE 155 



Secretion 156 



Amount 157 



General properties 157 



Chemical composition . . " 158 



